The answer is yes, two different genotypes can result in the same phenotype. Remember, the recessive phenotype will be expressed only when the dominant allele is absent, or when an individual is homozygous recessive (tt) (Figure below).
How can two people have different genotypes but the same phenotype?
Mandira P. Same phenotype but different genotype is possible due to presence of dominant allele. … A person can have a dominant allele on both the homologous chromosomes (i.e. in double dose) while another person may have single dominant allele and a corresponding recessive allele.
Why can individuals with different genotypes have the same phenotype quizlet?
Each parent provides its offspring with one allele if every gene, so that the offspring inherits a pair if alleles for every gene. The combination of alleles in the offspring. … The masking of recessive alleles can result in organisms with the same phenotype but different genotypes.
Can a genotype and phenotype be the same?
The sum of an organism’s observable characteristics is their phenotype. … Whilst a phenotype is influenced the genotype, genotype does not equal phenotype.
How can cells have the same genotype but differ in their phenotype?
2: Phenotype is determined by the specific genes within a genotype that are expressed under specific conditions. Although multiple cells may have the same genotype, they may exhibit a wide range of phenotypes resulting from differences in patterns of gene expression in response to different environmental conditions.
What are the differences between genotypes and phenotypes?
The genotype is a set of genes in the DNA which are responsible for the unique trait or characteristics. Whereas the phenotype is the physical appearance or characteristic of the organism. Thus, we can find the human genetic code with the help of their genotype.
Where one can determine the genotype and phenotype?
The test cross is another fundamental tool devised by Gregor Mendel. In its simplest form, a test cross is an experimental cross of an individual organism of dominant phenotype but unknown genotype and an organism with a homozygous recessive genotype (and phenotype).
When two different alleles are present in an organism one the recessive allele may mask the expression of the other the dominant allele?
Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.
What does an organism’s phenotype describe quizlet?
phenotype. An organism’s physical appearance.
Is PP genotype or phenotype?
There are three available genotypes, PP (homozygous dominant ), Pp (heterozygous), and pp (homozygous recessive). All three have different genotypes but the first two have the same phenotype (purple) as distinct from the third (white).
Explanation: The genotype is an individual’s collection of genes. The phenotype is the expression of the genotype in a certain environment. It means that two clones, with exactly the same genotype, will not look the same (will have different phenotypes) if they are raised in different environments.
What is the relationship between genotype and phenotype?
The genotype of an organism is defined as the sum of all its genes. The phenotype of an organism is the observable physical or biochemical characteristics of an organism, determined by both genetic make-up and environmental influences.
Why don t similar genotypes produce the same phenotype?
Why don’t similar genotypes always produce the same phenotype? Animals display different phenotypes dependent on diet, not genotype. … the allele’s frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change.
Is it possible for twins to have different genotype?
About one-third of twins are monozygotic twins. … The result is dizygotic or fraternal twins. These two individuals share the same amount of genetic material as would any two children from the same mother and father. In other words, they possess a different genotype and phenotype.